Question

Sound enters the ear travels through the auditory canal and reaches the ear drum, The auditory canal is approximately a tube open at only one end. The other end is closed by the eardrum. A typical length for the auditory canal in an adult is about 2.775 cm. The speed of sound is 343 m/s. What is the fundamental frequency of the canal?
(Interestingly, the fundamental frequency is in the frequency range when human hearing is most sensitive).